### satyam343's blog

By satyam343, 3 months ago,

We invite you to participate in CodeChef’s Starters 72, this Wednesday, 4th January.

Time: 8 PM — 11:00 PM IST

Joining us on the problem setting panel are:

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest.

The video editorials of the problems will be available for all users for 1 day as soon as the contest ends, after which they will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here.

Hope to see you participating. Good Luck!

• +22

By satyam343, 3 months ago,

Thank you for participation! I hope you liked atleast one problem from the set (:

We tried hard to have an interesting problemset.

It is sad to see people disliking the round only because some problems were hard. Please read the intended solutions to know why we decided to put the problems(especially D) at current positions.

1762A - Divide and Conquer

Idea:satyam343

Hint 1
Hint 2
Hint 3
Solution
Code

1762B - Make Array Good

Idea:satyam343

Hint 1
Hint 2
Hint 3
Solution
Code

1762C - Binary Strings are Fun

Idea:satyam343

Hint 1
Hint 2
Hint 3
Solution
Code

1762D - GCD Queries

Idea:amurto Prepared by:errorgorn

Hint 1
Hint 2
Hint 3
Solution
Code

1762E - Tree Sum

Idea:satyam343 Improved by:TheScrasse

Hint 1
Hint 2
Hint 3
Solution
Code

1762F - Good Pairs

Idea:satyam343

Hint 1
Hint 2
Hint 3
Solution
Code

Idea:satyam343

Hint 1
Hint 2
Hint 3
Solution
Code

• +240

By satyam343, 3 months ago,

Hello, Codeforces!

amurto and I are glad to invite everyone to participate in Codeforces Round #838 (Div. 2), which will be held on 15.12.2022 17:35 (Московское время).

This Round will be rated for participants with rating strictly lower than 2100. Participants from the first division are also welcomed to take part in the competition but it will be unrated for them.

You will be given 7 problems and 2 hours and 30 minutes to solve them. One of the problems will be interactive. Make sure to read this blog and familiarize yourself with these types of problems before the round!

We would like to thank:

Score distribution is 500 — 1000 — 1750 — 2000 — 2500 — 2750 — 3500.

UPD1: Congratulations to the winners!

Overall:

Rated:

UPD2: Editorial is out.

We are looking forward to your participation!

• +445

By satyam343, 3 months ago,

We invite you to participate in CodeChef’s December Long Challenge, starting this Saturday, 10th December, 8 PM IST onwards.

Please note, the contest is open for 2 days, i.e, from 10th — 12th December. The long Challenge will be rated for Div 3 & 4 coders.

Joining us on the problem setting panel are:

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest.

The video editorials of the problems will be available for all users for 1 day as soon as the contest ends, after which they will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here.

Hope to see you participating. Good Luck!

• +19

By satyam343, 5 months ago,

We invite you to participate in CodeChef’s Starters 63, this Wednesday, 2nd November, rated till 6-stars Coders (ie. for users with rating < 2500).

Time: 8 PM — 11:00 PM IST

Joining us on the problem setting panel are:

Written editorials will be available for all on discuss.codechef.com. Pro users can find the editorials directly on the problem pages after the contest.

The video editorials of the problems will be available for all users for 1 day as soon as the contest ends, after which they will be available only to Pro users.

Also, if you have some original and engaging problem ideas, and you’re interested in them being used in CodeChef's contests, you can share them here.

Hope to see you participating. Good Luck!

• +45

By satyam343, 5 months ago,

Thank you for participation! We apologize for problem D that turned out to be harder than expected. Still, we hope that you liked most of the problems.

In case you found C2 tedious to implement or found many cases to deal with, I would recommend you to have a look at the intended solution. I think it is interesting and easy to implement.

1736A - Make A Equal to B

Solution
Code

1736B - Playing with GCD

Solution
Code

1736C1 - Good Subarrays (Easy Version)

Solution
Code

1736C2 - Good Subarrays (Hard Version)

Solution
Code(Offline queries)
Code(Online queries)

1736D - Equal Binary Subsequences

Solution
Code

1736E - Swap and Take

Solution
Code

• +116

By satyam343, 5 months ago,

Hello, Codeforces!

mana, naman1601 and I are glad to invite everyone to participate in Codeforces Round 825 (Div. 2), which will be held on Oct/10/2022 17:35 (Moscow time).

This Round will be rated for participants with rating lower than 2100.

You will be given 5 problems with one subtask and 2 hours to solve them

We would like to thank:

The score distribution will be announced closer to the start of the round.

UPD1: Score distribution is 500 — 1000 — ( 1250 + 2000 ) — 2000 — 2500.

UPD2: Congratulations to the winners!

Overall:

Rated:

UPD3: Editorial is out.

Good luck and have fun!

• +318